If you have read anything about getting found online lately, you have been handed an alphabet: SEO, AEO, GEO, sometimes LLMO or SXO thrown in. Most articles use them loosely, as if they were the same idea wearing different hats. They are related, but they are not identical, and knowing the difference tells you where to spend your effort. Here is each one, plainly.
What is SEO?
SEO, Search Engine Optimization, is the original. It is the work of getting your pages to rank well on a search results page, the classic list of blue links. The goal is position: be on page one, ideally near the top, so people click through. SEO rewards relevant content, a technically sound site, and links from other sites that vouch for you. It has been the foundation of online visibility for twenty years, and it is not going anywhere.
What is AEO?
AEO, Answer Engine Optimization, shifts the goal from ranking to being the answer. When a tool responds to a question with a direct answer instead of a list, AEO is the work of being the business or source that answer names. It cares about clarity and directness: pages that answer real questions plainly, FAQ content, structured data, and the kind of authority that makes a tool comfortable stating your name as the answer. AEO grew up alongside featured snippets and voice assistants and matters more every year as direct answers replace link lists.
What is GEO?
GEO, Generative Engine Optimization, is the newest, born with generative AI. A generative engine reads the web and writes an answer, like ChatGPT, Perplexity, or Google's AI Overviews. GEO is the work of being cited by those tools when they generate an answer in your category. It overlaps heavily with AEO; the difference is emphasis. AEO frames the goal as being the answer; GEO frames it as being the source the generative tool quotes. There is a full plain-language guide to GEO here.
So how do they fit together?
Think of them as layers, not rivals:
- SEO is the foundation. A clear, well-structured, trustworthy site is read by search engines and AI alike. Without it, nothing above works.
- AEO is the framing. Structure that content as plain answers to real questions, and you become eligible to be the answer, not just a link.
- GEO is the destination. When generative tools build answers, a site that is clear, well-structured, consistent, and corroborated is the one they cite.
The encouraging part: the work underneath all three is mostly the same. State plainly what you do and where, add structured data, keep your details consistent everywhere, complete your Google Business Profile, and earn recent reviews and mentions. Do that and you are serving SEO, AEO, and GEO at once.
Which should a local business focus on first?
Start with the shared foundation, because it pays off in every direction. But understand where the open opportunity is. SEO is crowded; everyone has been fighting over Google rankings for two decades. AEO and GEO are wide open, especially locally. In most Charlotte categories, almost no competitor is working on being named by AI yet. That means the foundation you build now does double duty: it shores up your search rankings and it puts you in the AI answers while the field is empty. If you want to go deeper on the answer side, start with what AEO is.
Find out where you stand across all three
The free AI Visibility Check shows what ChatGPT, Perplexity, and Google's AI say about your business and your competitors right now, with the three fixes I'd make first. It is the fastest way to see whether your foundation is working. No call, no obligation.
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What is the difference between SEO, AEO, and GEO?
SEO works to rank your pages on a list of results. AEO works to make your business the answer when a tool responds to a question. GEO works to get your business cited by generative AI tools. They share a foundation, but SEO targets rankings while AEO and GEO target being named inside a single answer.
Does SEO still matter if AI is answering questions?
Yes. Good SEO is most of the groundwork for AEO and GEO. AI tools read the same web pages search engines crawl, so a clear, well-structured, authoritative site helps in both worlds. SEO is the base layer that AEO and GEO build on, not something they replace.
Which should a local business focus on first?
Start with the shared foundation: a clear website, a complete Google Business Profile, consistent details everywhere, structured data, and recent reviews. That serves all three at once. For most local businesses the biggest near-term opening is AEO and GEO, because few local competitors are working on them yet.